With several large-scale sky surveys ongoing and recently completed, the era of Big Data has dawned on optical time-domain astronomy. Abundant archival data provide an opportunity to perform systematic studies of stellar variability in nearby galaxies, and thereby yield constraints on the effect of environmental factors, such as metallicity. I will present results from mining the data from the Palomar Transient Factory survey for photometric variability of luminous stars in the Andromeda Galaxy. On the other hand, the enormous volume and rate of data bring their own challenges for real-time applications. I will highlight recent progress in the development of infrastructure and analysis tools to tackle those challenges, with a focus on event-broker systems (e.g., ANTARES), which allow timely discovery and characterization of interesting short-lived astrophysical events by automatically triaging the overwhelming time-domain alert-data. As part of the broker, an efficient and effective algorithm for selecting rare and novel events is crucial in the big-data era. I will briefly describe such an algorithm I have designed in preparation for VRO/LSST alerts.
Topic: UIUC Astronomy Colloquium
Time: This is a recurring meeting Meet anytime
Join Zoom Meeting
https://illinois.zoom.us/j/95488319650?pwd=MjZ5VlhBLzhaRFloZXNIcEJLZWNGZz09
Meeting ID: 954 8831 9650
Password: learn
One tap mobile
+13126266799,,95488319650# US (Chicago)
+17866351003,,95488319650# US (Miami)
Dial by your location
+1 312 626 6799 US (Chicago)
+1 786 635 1003 US (Miami)
+1 929 205 6099 US (New York)
+1 267 831 0333 US (Philadelphia)
+1 301 715 8592 US (Germantown)
+1 470 250 9358 US (Atlanta)
+1 470 381 2552 US (Atlanta)
+1 646 518 9805 US (New York)
+1 651 372 8299 US (St. Paul)
+1 720 928 9299 US (Denver)
+1 971 247 1195 US (Portland)
+1 213 338 8477 US (Los Angeles)
+1 253 215 8782 US (Tacoma)
+1 346 248 7799 US (Houston)
+1 602 753 0140 US (Phoenix)
+1 669 219 2599 US (San Jose)
+1 669 900 6833 US (San Jose)
+1 438 809 7799 Canada
+1 587 328 1099 Canada
+1 647 374 4685 Canada
+1 647 558 0588 Canada
+1 778 907 2071 Canada
+49 69 7104 9922 Germany
+49 30 5679 5800 Germany
+49 695 050 2596 Germany
+82 2 6022 2322 Korea, Republic of
+82 2 6105 4111 Korea, Republic of
+44 203 481 5240 United Kingdom
+44 131 460 1196 United Kingdom
+44 203 481 5237 United Kingdom
+81 3 4578 1488 Japan
+81 524 564 439 Japan
+61 8 7150 1149 Australia
+61 2 8015 6011 Australia
+61 3 7018 2005 Australia
+52 229 910 0061 Mexico
+52 554 161 4288 Mexico
+65 3158 7288 Singapore
+65 3165 1065 Singapore
Meeting ID: 954 8831 9650
Password: 436422
Find your local number: https://illinois.zoom.us/u/ad8dOMOvbY
Join by SIP
95488319650@zoomcrc.com